Kaolin – Paper Industry Grade

Overview

The primary use of kaolin is in the paper industry as a paper coating which improves appearance by contributing to brightness, smoothness and gloss. It also improves printability. Additionally, it is used by the paper industry as an filler reducing cost and the use of tree-based resources.

It is frequently used in adhesives for paper to control the penetration into the paper.

SPECIFICATIONS FOR PAPER GRADE KAOLIN

GRADE: PM – 82

Physical Properties

Parameter

Specifications

Apperance

White

Moisture

1.00% max

Residue 300 BSS Mesh by wet sieving

0.50% max

Water of Plasticity

32 – 35 ml/100gm

pH @10% solid concentration

6 – 8

Brightness (ISO)

83 % (+/- 1%)

Bulk Density

265 – 275 gm/ltr

Yellow Index

3.5 – 4.5

Oil Absorption

32 – 37 gm/ltr

Specific Gravity

2.6

Chemical Properties

Parameter

Specifications

SiO2

44.00 – 45.00%

Al2O3

36.50 – 37.50%

Fe2O3

00.15 – 00.35%

TiO2

00.15 – 00.25%

CaO + MgO

00.05 – 00.25%

Na2O + K2O

00.15 – 00.25%

L.O.I

13 – 14%

GRADE: PM – WHITE

Physical Parameters

Parameter

Specifications

Apperance

White Lumps

Moisture

5.00% max

Residue 300 BSS Mesh by wet sieving

1.00% max

Water of Plasticity

28 – 30 ml/100gm

pH @10% solid concentration

7.5 – 8.5

Brightness (ISO)

80 % (+/- 1%)

Total Shrinkage (11050C ½ hour soak)

11.50% max

Fired Brightness – L* Value (11500C)

90 – 92%

Chemical Properties

Parameter

Specifications

SiO2

46.00 – 47.00%

Al2O3

36.50 – 37.50%

Fe2O3

00.30 – 00.38%

TiO2

00.90 – 01.10%

CaO + MgO

00.25 – 00.35%

Na2O + K2O

00.10 – 00.15%

L.O.I

13.25 – 13.75%

Pratham Minchemis a well-established manufacturer, exporter & trader located at Bhuj – Kutch, India with operations spread across the world.